Tait t2020 User Manual

Also see for t2020: Service manual Operator's manual Application note

Contents

DTMF Calls 29DTMF CallsDTMF (dual tone multiple frequency) is the tone-based system used in the world’s telephone net-works. If your system has access to the PSTN (pub-lic switched telephone network) or other networksthat make use of DTMF tones, your radio can makea call to a telephone or send control codes to aremote device.There are two ways to make DTMF calls on yourT2020: preset DTMF calls, and dialed DTMF calls.Preset DTMFCallsThere are two different types of preset DTMF callsthat may be programmed for your radio. A single one touch DTMF call may be assignedto the auxiliary key ( ). To make the call,press the auxiliary key. A DTMF call may be associated with up to 20programmed alpha symbols. See “Alphanu-meric Entry Mode” on page 32 for furtherdetails.The transmit indicator ( ) appears briefly and theradio may give a short beep, as the call is transmit-ted.Dialed DTMFCallsConsult your system manager or the person whoprogrammed your radio for what DTMF stringsyou can dial. They consist of DTMF tones 0 to 9, *and #, and may include tones A to D.Dialing Tones A to DIf you wish to dial tones A to D, your radio may beprogrammed so that you can use the PTT key as a